CN106593748B - A kind of horizontal axis tidal current energy hydraulic turbine experimental provision and its experimental method - Google Patents
A kind of horizontal axis tidal current energy hydraulic turbine experimental provision and its experimental method Download PDFInfo
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- CN106593748B CN106593748B CN201710055422.2A CN201710055422A CN106593748B CN 106593748 B CN106593748 B CN 106593748B CN 201710055422 A CN201710055422 A CN 201710055422A CN 106593748 B CN106593748 B CN 106593748B
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- Prior art keywords
- blade
- hydraulic turbine
- impeller
- location hole
- sliding block
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/008—Measuring or testing arrangements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The invention discloses a kind of horizontal axis tidal current energy hydraulic turbine experimental provision and its experimental methods, including pillar, it is fixed on the sealed cabin on pillar top and the impeller by connecting shaft mounted on sealed cabin end, the impeller includes blade, sliding block and runs through the impeller front disc and impeller hub disk that axis is attached by connecting shaft, the impeller front disc and the opposite end face of impeller hub disk are equipped with corresponding circumferential track, it is slided along track in gap of the sliding block between end face, and the connecting shaft is equipped with location hole in the peripheral surface in gap；The root of the blade is equipped with fixing axle, and sliding block extends radially through the sliding eye being inserted into for fixing axle, and blade slides into the position of location hole by sliding block, and fixing axle passes through the sliding eye of sliding block to be embedded in location hole.The present apparatus is mounted on open type sink, when experiment, the blade quantity and rotating vane that are mounted on impeller by change change incoming angle, can be than the more accurately influence of dummy level axis tidal current energy water turbine blade quantity and incoming angle to hydraulic turbine hydrodynamic characterisitic, it is simple in structure, reduce experimental cost.
Description
Technical field
The present invention relates to a kind of hydraulic turbines, and in particular to a kind of horizontal axis tidal current energy hydraulic turbine.
Background technology
Marine tidal-current energy is that a kind of cleaning, energy be huge, the renewable and predictable energy, reasonable development and using to alleviating
Energy crisis and improvement problem of environmental pollution are of great significance.The installation of horizontal axial type tidal current energy water turbine is simple, low cost and
It is efficient, so that it has been obtained more applications in marine tidal-current energy acquisition.
Trend kinetic energy is converted to electric energy, generated energy and tidal current energy water turbine waterpower by the hydraulic turbine under trend hydro powered
Characteristic is closely bound up, and tidal current energy water turbine structural parameters (number of blade and incoming angle) have very tidal current energy water turbine hydraulic characteristic(s)
It is big to influence.The influence of horizontal axis tidal current energy hydraulic turbine structure parameter (number of blade and incoming angle) to turbine hydraulic performance is commented at present
Estimate main reference wind energy conversion system design experiences, but both media are different due to air and water, the difference pair of viscosity and compressibility
The influence of hydrodynamic performance is unable to reach accurate validation, therefore by trunnion axis turbine chamber indoors modeling test, summarizes the number of blade
With incoming angle to the affecting laws of turbine characteristics, improves the hydraulic turbine and trend capacity usage ratio is necessary.
Invention content
Goal of the invention：In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide it is a kind of convenient for the observation number of blade and
The horizontal axis tidal current energy hydraulic turbine experimental provision that incoming angle influences turbine characteristics.
Technical solution：The present invention provides a kind of horizontal axis tidal current energy hydraulic turbine experimental provision, including pillar, it is fixed on branch
The sealed cabin of top end and by connecting shaft be mounted on sealed cabin end impeller, the impeller include blade, sliding block and
The impeller front disc and impeller hub disk being attached through axis by connecting shaft, the impeller front disc and the opposite end of impeller hub disk
Face is equipped with corresponding circumferential track, is slided along track in gap of the sliding block between end face, and the connecting shaft is in gap
Peripheral surface be equipped with location hole；The root of the blade is equipped with fixing axle, and sliding block has been extended radially through to be passed through for fixing axle
Sliding eye, blade slides into the position of location hole by sliding block, and fixing axle passes through the sliding eye of sliding block to be embedded in location hole.
Further, the sliding eye of the fixing axle and sliding block is screw-thread fit.
Further, the quantity of the location hole is 12, between two neighboring location hole successively with the angle of axial connecting line
It is 60 °, 12 °, 18 °, 30 °, 24 °, 36 °, 36 °, 24 °, 30 °, 18 °, 12 °, 60 °.
Further, the fixing axle and location hole are screw-thread fit.
Further, corresponded on the impeller hub disk offered at the position of location hole axially through fixing screwed hole,
Fixing screwed hole fixed blade described in Thrust nut precession.
Further, the rotary shaft is inserted by journal bearing and is mounted in sealed cabin.
A kind of experimental method of horizontal axis tidal current energy hydraulic turbine experimental provision, includes the following steps：
(1) hydraulic turbine experimental provision is mounted on open type bottom of gullet, and arranges that flow rate of water flow measures in front of the hydraulic turbine
Instrument detects flow rate of water flow size, photoelectric sensor is arranged above the hydraulic turbine, and by a certain branch blade blacking in the hydraulic turbine, observe
The rotary speed of the hydraulic turbine；
(2) it chooses the quantity of blade and is inserted into the sliding eye of sliding block, sliding block slides in track, slides into corresponding
The position of location hole makes blade after one week is uniformly distributed, and stops sliding；
(3) rotating vane so that the location hole in the fixing axle and sliding eye and connecting shaft of root of blade is connected by screw thread
It connects, according to the difference of rotation depth, adjustment blade incoming angle, to obtain shadow of the blade incoming angle to hydraulic turbine start velocity
It rings；
(4) blade of different number is installed respectively and uses same incoming angle, above step is repeated, to obtain not
With influence of the different leaves number to rotational speed of water turbine under flow velocity.
Further, the fixing axle and impeller front disc are equipped with corresponding index line, when the two overlaps, indicate incoming angle
It is 0 °；When the two is misaligned, using angle between protractor two index lines of measurement, to determine incoming angle.
Further, by 12 location holes according to angle setting sequence number consecutively, when blade quantity is 3, blade is placed in
1,5,9 hole；When blade quantity is 4, blade is placed in 1,4,7,10 holes；When blade quantity is 5, blade is placed in 1,3,6,8,11 holes；
When blade quantity is 6, blade is placed in 1,2,5,7,9,12 holes.
Advantageous effect：The present apparatus is mounted on open type sink, when experiment, passes through the blade quantity that change is mounted on impeller
Change incoming angle with rotating vane, it can be than more accurately dummy level axis tidal current energy water turbine blade quantity and incoming angle to water
The influence of turbine hydrodynamic characterisitic, it is simple in structure, reduce experimental cost.
Description of the drawings
Fig. 1 is the side schematic view of hydraulic turbine experimental provision of the present invention；
Fig. 2 is the side sectional view of hydraulic turbine experimental provision of the present invention；
Fig. 3 is the diagrammatic cross-section of turbine impeller of the present invention.
Specific implementation mode
Technical solution of the present invention is described in detail below, but protection scope of the present invention is not limited to the implementation
Example.
Embodiment：A kind of horizontal axis tidal current energy hydraulic turbine experimental provision, as shown in Fig. 1~2, including pillar 13, sealed cabin
12 and impeller.The top of sealed cabin 12 is welded with the sealed cabin 12 being laterally arranged, and open type is mounted in experiment by pillar 13
Bottom of gullet.One end of sealed cabin 12 is connected by connecting shaft with impeller, connecting shaft is inserted into the horizontal direction after sealed cabin 12
One journal bearing 11 is set every a distance on axis.As shown in figure 3, after impeller includes connecting shaft 1, impeller front disc 3, impeller
Forward and backward disk 4 is fixed also cross the axis of impeller front disc 3 and impeller hub disk 4 for disk 4, sliding block 7 and blade 8, connecting shaft 1
Connection, impeller front disc 3 and the opposite end face of impeller hub disk 4 are equipped with corresponding circumferential track 5, and sliding block 7 can be between end face
It moves in a circle along track 5 in gap.Sliding block 7 extends radially through the sliding eye 6 being inserted into for blade 8, is equipped in sliding eye 6
Internal thread.Fixing axle 9 is arranged in the root of blade 8, and there is external screw thread in 9 outer surface of fixing axle, matches for screw thread with the sliding eye 6 of sliding block 7
It closes.Before the impeller in the gap between disk 3 and impeller hub disk 4, the peripheral surface of connecting shaft 1 is equipped with 12 location holes 2, location hole
The internal thread coordinated with 9 external screw thread of fixing axle also is provided in 2, blade 8 slides into the position of location hole 2, blade 8 by sliding block 7
The fixing axle 9 of root passes through the sliding eye 6 of sliding block 7 to be embedded in location hole 2.Between two neighboring location hole 2 with the angle of axial connecting line
Degree is followed successively by 60 °, 12 °, 18 °, 30 °, 24 °, 36 °, 36 °, 24 °, 30 °, 18 °, 12 °, 60 °, can select to be inserted into not in an experiment
With the blade of quantity, the adjacent angular of location hole makes blade quantity that can so that blade is to be evenly arranged at 3~6
's.Specifically, by location hole, number 1~12 is placed in 1,5,9 holes when blade quantity is 3 respectively；When blade quantity is 4, set
In 1,4,7,10 holes；When blade quantity is 5, it is placed in 1,3,6,8,11 holes；When blade quantity is 6, it is placed in 1,2,5,7,9,12 holes.
The back side of disk 4 corresponds to the fixing screwed hole 12 that horizontal perforation is offered at the position of location hole 2 after the impeller, and Thrust nut 13 can
Precession fixing screwed hole compresses the fixing axle 9 in location hole 2, with fixed blade 8.
In an experiment, the present apparatus is mounted on open type sink, and 5 meters of place's arrangement flow rate of water flow measurements in front of the hydraulic turbine
Instrument arranges photoelectric sensor above the hydraulic turbine, by a certain branch blade blacking in the hydraulic turbine, so that sensor can record the hydraulic turbine
Rotating cycle.With needing according to the experiment, chooses 3~6 blades 8 and be installed in sliding block 7, sliding block 7 slides on the rail 5, for not
With quantity blade 8 slide into 2 corresponding position of specific location hole after, stop sliding.After sliding eye is parked in specific position, rotation
Rotating vane piece 8 so that the location hole 2 in the fixing axle 9 and sliding eye and connecting shaft 1 of 8 root of blade is connected through a screw thread.According to rotation
Turn the difference of depth, 8 incoming angle of blade can be adjusted, to probe into 8 incoming angle of blade to tidal current energy water turbine hydrodynamic characterisitic
Influence.
It tests (one), considers influence of the blade number to turbine characteristics；Under determining flow rate of water flow, 3 leaves are chosen
Piece is installed in sliding block, and sliding block slides in orbit, until sliding at corresponding location hole, the positioning for being 1,5,9 in number
Thrust nut 13, fixed blade are loaded onto in fixing screwed hole 12 at 2 position of hole；Check determine each root of blade index line and
Whether the angle of impeller front disc surface index line is identical at the position of positioning hole of place.In the present embodiment, incoming angle takes fixed value
20°.If it is not, should be adjusted, rotating vane, adjustment root of blade is embedded in depth of positioning hole, to ensure having identical incoming
Angle.
Start sink, using photoelectric sensor data measured, to obtain under the flow rate of water flow under certain flow rate of water flow
The velocity of rotation of tidal current energy water turbine experimental provision.
Installation blade number is 4,5,6 respectively, repeats above step.To obtain in lower different leaves different in flow rate
Number, rotational speed of water turbine, as shown in the table：
| Rotating speed (r/m) | 3 | 4 | 5 | 6 |
| 0.6 | 62 | 66 | 70 | 74 |
| 0.7 | 75 | 82 | 87 | 92 |
| 0.8 | 93 | 101 | 110 | 120 |
Data are observed, it can be found that increasing with lobe numbers, under identical speed of incoming flow, blade rotary speed becomes
Greatly.
It tests (two), considers influence of the blade incoming angle to turbine characteristics；Select the blade installation of fixed blade number
Into sliding block, sliding block slides in orbit, and until sliding at corresponding location hole, in the present embodiment, lobe numbers take 6,
Thrust nut 13, fixed blade are loaded onto in the fixing screwed hole 12 at 2 position of location hole that number is 1,2,5,7,9,12；It checks
Determine whether the angle of impeller front disc surface index line at each root of blade index line and place position of positioning hole is identical, for the first time
Incoming angle is taken as 12 °.If it is not, should be adjusted, rotating vane, adjustment root of blade is embedded in depth of positioning hole, to ensure to have
Identical incoming angle.
Start sink, gradually increase flow rate of water flow, the record hydraulic turbine starts the size of flow rate of water flow when rotation；Adjust water wheels
16 °, 20 ° of machine blade incoming angle, and above step is repeated, the flow rate of water flow recorded is as shown in the table：
| Incoming angle (°) | 12 | 16 | 20 |
| Start speed (m/s) | 0.73 | 0.67 | 0.62 |
Data are observed, it is found that when incoming angle is bigger, hydraulic turbine start velocity is smaller.
Claims (9)
1. a kind of horizontal axis tidal current energy hydraulic turbine experimental provision, it is characterised in that：Including pillar, it is fixed on the fixation on pillar top
Cabin and the impeller that sealed cabin end is mounted on by connecting shaft, the impeller include blade, sliding block and are passed through by connecting shaft
Wear the impeller front disc and impeller hub disk that axis is attached, the impeller front disc and the opposite end face of impeller hub disk are equipped with and correspond to
Circumferential track, slided along track in gap of the sliding block between end face, and the connecting shaft is in the peripheral surface in gap
Equipped with location hole；The root of the blade is equipped with fixing axle, and sliding block extends radially through the sliding eye passed through for fixing axle, blade
The position of location hole is slided by sliding block, fixing axle passes through the sliding eye of sliding block to be embedded in location hole.
2. horizontal axis tidal current energy hydraulic turbine experimental provision according to claim 1, it is characterised in that：The fixing axle and cunning
The sliding eye of block is screw-thread fit.
3. horizontal axis tidal current energy hydraulic turbine experimental provision according to claim 1, it is characterised in that：The number of the location hole
Amount is 12, be followed successively by with the angle of axial connecting line between two neighboring location hole 60 °, 12 °, 18 °, 30 °, 24 °, 36 °, 36 °,
24°、30°、18°、12°、60°。
4. horizontal axis tidal current energy hydraulic turbine experimental provision according to claim 1 or 3, it is characterised in that：The fixing axle
It is screw-thread fit with location hole.
5. horizontal axis tidal current energy hydraulic turbine experimental provision according to claim 1, it is characterised in that：In the impeller hub disk
Offered at the position of upper corresponding location hole axially through fixing screwed hole, fixing screwed hole described in Thrust nut precession fixes
Blade.
6. horizontal axis tidal current energy hydraulic turbine experimental provision according to claim 1, it is characterised in that：The connecting shaft passes through
Journal bearing is inserted into and is mounted in sealed cabin.
7. the experimental method of horizontal axis tidal current energy hydraulic turbine experimental provision according to claim 1, it is characterised in that：Including
Following steps：
（1）Hydraulic turbine experimental provision is mounted on open type bottom of gullet, and arranges that flow rate of water flow measuring instrument is visited in front of the hydraulic turbine
Flow rate of water flow size is surveyed, photoelectric sensor is arranged above the hydraulic turbine, and by a certain branch blade blacking in the hydraulic turbine, observe water wheels
The rotary speed of machine；
（2）It chooses the quantity of blade and is inserted into the sliding eye of sliding block, sliding block slides in track, slides into corresponding positioning
The position in hole makes blade after one week is uniformly distributed, and stops sliding；
（3）Rotating vane so that the location hole in the fixing axle and sliding eye and connecting shaft of root of blade is connected through a screw thread, root
According to the difference of rotation depth, adjustment blade incoming angle, to obtain influence of the blade incoming angle to hydraulic turbine start velocity；
（4）The blade of different number is installed respectively and uses same incoming angle, above step is repeated, to obtain in not cocurrent flow
Lower influence of the different leaves number to rotational speed of water turbine of speed.
8. the experimental method of horizontal axis tidal current energy hydraulic turbine experimental provision according to claim 7, it is characterised in that：It is described
Fixing axle and impeller front disc are equipped with corresponding index line, when the two overlaps, indicate that incoming angle is 0 °；When the two is misaligned
When, using angle between protractor two index lines of measurement, to determine incoming angle.
9. the experimental method of horizontal axis tidal current energy hydraulic turbine experimental provision according to claim 7, it is characterised in that：It is described
The quantity of location hole is 12, be followed successively by with the angle of axial connecting line between two neighboring location hole 60 °, 12 °, 18 °, 30 °,
24°,36°,36°,24°,30°,18°,12°,60°；By 12 location holes according to angle setting sequence number consecutively, work as the number of blade
When amount is 3, blade is placed in 1,5,9 holes；When blade quantity is 4, blade is placed in 1,4,7,10 holes；When blade quantity is 5, blade is set
In 1,3,6,8,11 holes；When blade quantity is 6, blade is placed in 1,2,5,7,9,12 holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710055422.2A CN106593748B (en) | 2017-01-25 | 2017-01-25 | A kind of horizontal axis tidal current energy hydraulic turbine experimental provision and its experimental method |
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| CN201710055422.2A CN106593748B (en) | 2017-01-25 | 2017-01-25 | A kind of horizontal axis tidal current energy hydraulic turbine experimental provision and its experimental method |
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| CN106593748B true CN106593748B (en) | 2018-10-23 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102050205B1 (en) * | 2018-03-26 | 2019-11-28 | 배명순 | Generation apparatus using water power |
| CN110344988B (en) * | 2019-07-15 | 2020-07-03 | 东北师范大学 | Horizontal shaft tidal current energy water turbine experiment assistor and using method thereof |
| CN111173666B (en) * | 2020-01-21 | 2021-05-25 | 山东交通学院 | Blade-adjustable tidal current energy water turbine experimental device and method |
| CN111156123B (en) * | 2020-01-21 | 2021-05-25 | 山东交通学院 | Horizontal shaft tidal current energy water turbine experimental device and experimental method thereof |
| CN111894783A (en) * | 2020-06-23 | 2020-11-06 | 河海大学 | Horizontal axis tidal current energy water turbine experimental device and method based on photoresistor |
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| CN202023675U (en) * | 2011-03-29 | 2011-11-02 | 杭州富水电站技术开发有限公司 | Blade signal feedback device |
| GB2489546A (en) * | 2011-03-30 | 2012-10-03 | Gurit Uk Ltd | Water turbine blade with composite spar |
| KR101335336B1 (en) * | 2012-05-25 | 2013-12-02 | 서울대학교산학협력단 | Horizontal axis tidal current power turbine, manufacturing method of same and tidal current power method in using same |
| CN204113726U (en) * | 2014-03-29 | 2015-01-21 | 童诚玲 | Detachable impeller |
| CN106121894A (en) * | 2016-08-10 | 2016-11-16 | 国家海洋技术中心 | A kind of marine tidal-current energy blade power generation performance detection device |
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2017
- 2017-01-25 CN CN201710055422.2A patent/CN106593748B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1898469A (en) * | 2003-11-20 | 2007-01-17 | 雅克·冯克奈尔 | Turbine and hydroelectric power plant for very low drops |
| CN102072067A (en) * | 2011-02-28 | 2011-05-25 | 重庆云河水电股份有限公司 | Four-blade operating mechanism |
| CN202023675U (en) * | 2011-03-29 | 2011-11-02 | 杭州富水电站技术开发有限公司 | Blade signal feedback device |
| GB2489546A (en) * | 2011-03-30 | 2012-10-03 | Gurit Uk Ltd | Water turbine blade with composite spar |
| KR101335336B1 (en) * | 2012-05-25 | 2013-12-02 | 서울대학교산학협력단 | Horizontal axis tidal current power turbine, manufacturing method of same and tidal current power method in using same |
| CN204113726U (en) * | 2014-03-29 | 2015-01-21 | 童诚玲 | Detachable impeller |
| CN106121894A (en) * | 2016-08-10 | 2016-11-16 | 国家海洋技术中心 | A kind of marine tidal-current energy blade power generation performance detection device |
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